One of the more prominent right lower paratracheal lymph node
measures 8.00mm in short axis."
A metastatic non-small-cell lung cancer with primary tumor measuring 6 cm and mediastinal lymph node metastases regressed after paratracheal lymph node
Fine-needle aspiration of an enlarged right paratracheal lymph node
and biopsy of the right lower lobe (Figure 4) both revealed noncaseating granulomas, consistent with sarcoidosis.
In the first patient (Patient 3, Table 1) the tumor responsible for a single right paratracheal lymph node
microscopic metastasis was suspected to be a synchronous right lobe subcentimeter (contralateral from the left sided noninvasive EFVPTC) classical papillary thyroid cancer.
Caption: Figure 1: (a) H&E staining of the thyroid bed and paratracheal lymph node
. Top row, from left to right: (i) squamous cell carcinoma in the thyroid bed; (ii) keratin pearls of squamous cell carcinoma in higher power.
A chest computed tomography (CT) revealed a 15 mm spiculated nodule in the right upper lobe, a 10 mm nodule in the left upper lobe, chronic interstitial fibrosis, and a right paratracheal lymph node
measuring 3.1cm, unchanged from a prior chest CT performed three months prior (Figure 2).
Prognostic importance of paratracheal lymph node
Specifically, the chest computed tomography scan revealed a 3.1-cm paratracheal lymph node
and a 3.1-cm right hilar (station 4R) lymph node.
According to Im study, right paratracheal lymph node
enlargement was seen in (87%) of cases whereas our study showed (60 %) involvement.
A recent theory is that patients who require a preoperative tracheostomy have more advanced disease and may have a higher rate of occult paratracheal lymph node
metastasis and thus preoperative tracheostomy increases the risk of stomal recurrence.
The right paratracheal lymph node
was found to be the most frequent site of mediastinal node enlargement in adults (4).
A subsequent CT scan confirmed the finding and identified a swollen right paratracheal lymph node
. The radiologist's report noted that "neoplasm cannot be entirely excluded."